Sleeve-valve-lubrication system



i May 20, 1930.

J. R. MARES SLEEVE VALVE LUBRICATION SYSTEM Filed May 20, 1927 4 Sheets-Sheet 1 I 28 I I I /7 A9 1 l -/7 l I a I Q I 1 I 1 l I 26 I 23 I I :722

I I O I 23 I H L z I I I E ii, 7 I I G /0 INVENTOR. Josfiw ii Mflfiis BY A TTOR/VEV.

May 20, 1930. J. R. MARES 1,759,198

SLEEVE VALVE LUBRICATION SYSTEM Filed May 20, 1927 4 Sheets-Sheet 2 INVENTOR.

J'o 552% ii. [Mm-s ATTORNEK May 20, 1930.

J. R. MAl QES 1,759,198

SLEEVE VALVE LUBRIGATION SYSTEM Filed May 20, 1927 4 Sheets-Sheet 3 INVENTOR. JOSEPH 7?. filfliris CM $8M A TTORNEY.

y 1930. J. R. MARES 1,759,198

- SLEEVE VALVE LUBRICATION SYSTEM Filed May 20, 1927 4 Sheets-Sheet 4 INVENTOR. J0 saw I? Nflmfis BY m $5 ATTORNEY.

Patented May 20, 1930 STATES P TENT O F E,

JOSEPH n." MABES, OF-TOLEIDO, OHIO, AssiGNoR To THE wrnnYs ovnnnenn comr'AnY,

OF TOLEDO, OHIO, A CORPORATION OF OHIO SLEnVFL-vA vE-ILUBRIGATION sYs'rEM Application filed May 20,

' My invention relatesto sleevevalve en I gines and more particularly to those of the so-called Knight engine classification. T

Among other objects the present invention contemplates'the provision of a syste'mof lubrication for the sleeves and adjoining por-' tions of an engine bywhich adequate lubricant is suppliedv to all portions of the sleeve, and the smoke incident to over lubrication of the intake port area, of the sleeves is avoided.

- "A further object of the invention is to provide means for withdrawing excess oil from the surface of the sleeves, said means being disposed on the exhaust port side of the sleeve, whereby the quantities of oilfwithdrawn are accumulated adj acent'a portion of the sleeve which is remote from the intake sumption. I

port. an incidental object the present invention contemplates a lubricative system whichaflords a material saving in oil con- Another object of the present invention is to provide a lubricative system for the-sleeves" and the adjoining surfaces of a sleevevalve engine, whereby sufiicient oil is drawn to the upper portion-of the sleeves to lubricate the compression and sealing rings, byestablishing a. reduced'pressure zone in the region of the sleeve above the ports thereof,'and disposing in cooperative relation with respect thereto and below the sleeve ports means for withdrawing any excess of lubricant which would normally make its way through. the intake ports of the sleeve into the piston chamber.

"It is'a further object of my invention to provide a combination of elements constituting a means of-lubrication by which excessive quantities of oil that normally accumulate in the vicinity of the intake port are removed therefrom and supplied to thesleeve surfaces on the exhaust port side of the engine, these being more susceptible to under-lubrication both by reason of their exposure t'oamore intense heat as well as the tendency of the positive pressure within the piston chamber to oppose the distribution of oil.

order to lubricate the upper portions of the sleeves as well as the'adjoining members, such as thecompressionring and thecylinder s sleeves.

1927. SerialNo. 192,560.

wall, without drawing appreciable quantities of oil into the piston chamber, I-have provided a vacuum tank mechanism, that is operated fromthe'intake manifold ofthe engine,

which is connected with the sleeve surfaces".

through the cylinder wall on the exhaust'port side of the engine and below the port for the.

purpose of withdrawingfany excess of oil.

The quantity which. is withdrawn is the a Knight engine of the conventional form, and

illustrates an embodiment of the principles ofmy invention which may be preferred,

Fig. II is'an eleva-tional View of an outer sleeve showing! a groove construction diifering in some respects from that, illustrated 1 in Fig. I; i Fig. III isa development of the sleeve il lustrated'in Fig. II, and i Figs. IV, V, and VI are developments of outersleeves embodying certain mod fications in sleeve groove construction.

The essential elements of a Knight engine include a water jacketed cylinder 1 which is provided with a crankcase portion'2 ad'- jacent its lower extremity and which is closed at the upper extremity by a cylinder head 3 which includes asealing ring 4 and a. compression ring 5. Within the cylinder are two reciprocating sleeves? and 8 which are driven by means of an'eccentric shaft 9 and rods 10 and 11. -The inner sleev e-8 isthe working barrel of the engine within whichis a piston (not shown) whichiisrconnected'to.a

crankshaft 13 by its connecting rod .14. The

cylinder is likewise provided with an inlet port 15 and an exhaust port 16, these being.

periodically in registration'with an inlet port 17 and exhaust port 18provided in the sleeves.

a portion of the piston chamber. The reason for this restriction is obvious. It will be observed that the above combination includes an outer sleeve in which the grooves are in more or less direct communication with the oil trap 27 and would therefore furnish only I a limited quantity'of oil for the upper porother hand, has two distinct groove areas, one

tion of the sleeve. The inner sleeve, on the of which is in communication with the oil trap by way 9f the slot in the outer sleeve, Whereas the other sleeve area communicates with the upper areas of the sleeves by means of the inclined channels 31. This combinationis only one of many which may be selected to advantage in arriving at the objects of the present invention. Others will be apparent to those skilled in the art and will be found to possess common advantages previously enumerated. In each instance, they will be found to involve a combination wherein a portion of the oil which would normally 7 make its way to the intake port area is drawn system in which the excess of oil is drawn therefrom and into the exhaust port area a where it is utilized to advantage. 'Aquantity of the oil reaches the upper extremities of the 1 sleeve, the flow'of which in the upwardly di rection may be facilitated by the inclined grooves 31 as well as a reduced pressure in the sleeve chamber. 7

It will be observed that'by means of the present invention there is provided an oiling away from the intake port into the region of the exhaust port and isthere removed with out danger of entering the combustion cham: ber. I It will also be observed that the invention enables one to remove the excess of oil which is present below the ports of the sleeves and at the same time realize adequate lubrication of the upper portion of the sleeves by reducing the pressure in the sleeve chambers,

which normally opposes the upward travel of the oil.

' Although the principles of'the invention have been described as they apply to the several modifications illustrated, it will be apparent to those skilled in the art that the principles are not limited to the specific embodiments disclosed, but may be extended to many modifications which fall within the scope of the invention, and I desire therefore that the invention belimited only to accord with the prior art and the appended claims.

I claim:

1. In an internal combustion engine of the sleeve valve type, a sleeve having intake and exhaust ports, means for supplying the lubricant to the surface thereof, and suction means to remove excess lubricant from the surface of the sleeve, said means being disposed to withdraw the fluid from the. exhaustport side of the sleeve. I

2. In a sleeve valve engine of the Knight class an inner and outer sleeve each having intake'and exhaust ports, means forsupplying'a lubricant to the surfaces thereof, and

suction means disposed below the exhaust port of the outer sleeve for removing excess oil accumulated'onthe surface of said sleeves.

In a: sleeve valve engine oftheKnight class whereina cylinder having an intake manifold, a cylinder head and inner and outer sleeves, each with intake and exhaust ports, are disposed cooperatively to form .a' sleeve chamber, a lubricative system for the sleeves comprising means for supplying lubricant to the sleeve surfaces, means '00- operatively disposed adj acent "the exhaust port of the sleevesfor removing an excess of lubricant on the surfaces of the sleeve, and

means for maintaining a'normally'reduced.

pressure within the chamber.

'4; In a sleeve valve engine. of the Knight class wherein a cylinder having anintake' manifold, .a 'cylinder head and an inner and outer sleeve, each having intake and exhaust.

ber thereby facilitating the upward passage;

5. In a sleeve valve engine ofthe Knight class! wherein a cylinder, having an: intake manifold, a cylinderhead, an inner valve sleeve and a slotted outer sleeve each provided with intake and exhaust ports are-disposed in cooperative relation to form a sleeve chamber, a lubricative system for the sleeves I comprising means forsupplying a lubr cant 'to the sleeve surfaces, means cooperatlvely disposed with respect to a slot adjacent the exhaust port of the outer sleeve for removing excess of lubricant from the surfaces of the I sleeve, said-sleeve chamber being rendered communicative with the intake manifold whereby a reduced normally operative press sure is established within said chamber.

6. In a sleeve valve engine of the Knight class wherein a cylinder having anintake manifold, a cylinder head and an inner and outer sleeve, each having intake and exhaust ports, are disposed in operative relation to form a sleeve chamber, alubricative system for the sleeves comprising means for supplying a lubricantto the sleeve surfaces, external suction means co-operative with the exhaust side of the sleeve for withdrawing oil' from adjacent the intake port toward the opposite side of the sleeve, and means for establishing a reduced normally operative pressure on the surface of the sleeves above the sleeve ports.

7. In an internal combustion engine of the 4i 7 f H 1,759,198

sleeve valve type embodying a sleeve having intake. and; exhaust ports, a, lubricative systeinfor said sleeve comprlslngmea'ns'for supplying ai'lubricant to the surface thereof,

' suctioninean's to withdraw excess lubricant from the surface of thesle eve said means being-located below the exhaust port of the outer'sleeve, andlmeans for establishing a reduced normally operative pressure onthe. surface of'the sleeves below the sleeve ports 8. In an internal combustion engine of the sleeve. valve type embodying a sleeve' having intakeiand exhaust ports, and having at least two .sets of aligned segmental. grooves, one

set being positioned below the intake port and: another of saidusets being positioned below the exhaust port, ailubricative. system" for said sleeve comprising means' for supply- Jingg a lubricantito the. surface thereof, and

means disposed on the exhaust side. of the sleeve for-removing excess lubricantthereon.

I 9; Inan internal combustion engine of the sleeve valve type. embodying a sleeve'having intakeand exhaust ports, and having at r least two sets of aligned" segmental grooves,

one-- set being'positioned below. the intake port, and 'anotherj-ofi'said sets being-tposi- 'tioned below the exhaustiport, alubricative systemjfor said sleeve comprising means for supplying a lubricant to the surface. thereof,

means disposed on the exhaust side of the.

sleeve for: removing excess lubricant thereon, and means for'estabhshing a reduced normal- 1y operative pressure on thesurface of the sleeve below the ports. i

In testimony whereo'fl-Iafiix my signature.

- 7 JOSEPH MARES. 

